Question

A square is removed from the right habd corner of a squre board. What is the area of the remaining board in square feet.

Answer 1

The side of big square is 10 feet.

The area of square is

`A=a^2`

Hence the area is

`A=10*10=100`

The side of the small sqaure is 5 feet.

Its area is

`B=5*5=25`

Hence the area of remaining portion is 100-25=75.

The answer is 3) 75 ft^2.